Fresh 1.8.1 Source installation, importing 1.7 blog and content

Hi,
I've got a source version of 1.8.1 up and running on my local environment and I would like to keep this version nice and clean. My 1.7 install is full of modules I've installed and either never used or don't require any more.

Is there any way I can migrate just the content from my 1.7 site in to the new, clean, 1.8.1 database?

It's not really an upgrade that I want to do. I just want to start fresh with the 1.8.1 install but not loose my content / blog from 1.7.

Should be installed per default and needs only be enabled. It adds a new menuitem (don't know the name exactly but something like "Import/Export"). You can choose which contenttypes and which data should be exported. It generates an xml file which
you can import on your new installation.